Spring-bending machine



Mar. 27, 1923- 1,449,813

A. J. FELLER ET AL SPRING BENDING' MACHINE Filed Feb. 18, 19.21

fms/vronas gromwsy.

Patented Mar. 27, 1923.

STATS.

ALLEN J. FELLER AND JOHN 0. WATTERS, OFDUCHESNE, U T HQ SPRING-BENDINGMACHINE.

Application filed February 18, 1921. Serial No. 445,915.

To all whom it may concern:

Be it known that ALLEN J. Fnnnnn and JoHN O. WATTERS, citizens of theUnited. States, residing at Duchesne, in the county of Duchesne andState of Utah, have invented new and useful Improvements inSpring-Bending Machines, of which the following is a specification.

This invention relates to certain new and useful improvements in springbending machines and .the primary object thereof is to provide a machineof this type which is of simple and economical construction and whichhas novel means for effecting bending of the spring.

The invention further aims to provide a machine of this type which canbe operated to impart varying curvatures to the springs and to otherwiseimprove, simplify and reduce to a minimum the number of parts requiredto provide an effective and easily operated machine of this type.

Further and other objects will be later set forth and manifested in thecourse of the following description.

In the drawings:

Figure l, is a fragmentary side elevation of the invention;

Figure 2, is a top planview;

Figure 3, is an enlarged section on line 33 of Figure 1, and

Figure 4 is a similar view on line 4l4= of Figure 2.

In proceeding in accordance with the present invention, a frame isemployed consisting of a horizontal looped member 1 which may be formedof a strip of metal set on edge and bent into loop form as shown.Suitable legs 2 and braces 3 are employed to afford a substantialmounting for the frame.

A pair of similar holders are employed each embodying a U-shaped member,the arms 4 of which are arranged to extend upwardly and the base ofwhich seats on top of the frame 1 and has a downwardly extending guide 5which is slidably received in the space between the sides of the loopedframe. An abutment 6 is employed which engages the bottom of theframe 1. A screw 8 loosely engages through abutment 6 and is threadedinto the base of the holder and has an eye 9 so that a rod or bar can bepassed through the eye and the latter rotated to securely clamp theholderin any desired position along the length of the frame. I I Thearms of the holder have spaced perforations 10 to receive a pin 11, thelatter formed to be passed through. the eyes at the ends of the springsupport S.

The bendingdevice includes an inverted U-shaped base 12 the arms: ofwhich embrace and are rigidly secured'to theframe sides by suitablefastenings 13 and which is formed with a depending nut part 14 toreceive a screw 15 having a hand crank 16, the upper end of the screwhaving a reduced terminal forming a shoulder, the terminal extendingthrou h apertures in the flexible spring support 5 and inthespringTLJthe support S seating on the shoulder.

In operation, the spring T is heated and clamped by means of clamps, notshown, onto the support S, the latter being secured to the holders bypassing the pins 11 through the eyes E, the terminal 17 being projectedthrough the apertures at the center of the spring and the springsupport. By turning the screw 15 the desired curvatures may be impartedto the spring support and thereby to the spring. When the desired bendhas been imparted to the spring support, the latter is then held rigidor in fixed position, by clamping the holders to the bed or frame 1until the spring becomes set. From the foregoing it will also be seenthat the arms 4, will actas guides or aliners forthe ends of the springsupport, preventing lateral movement thereof.

The openings 10 also provide for the accommodation of clamps with whichsome springs are equipped since in such in-- stances the spring endsmust be supported higher up to provide room for the clamps above theframe.

What is claimed is:

1. A spring bending machine, including a frame of looped formation,supporting feet therefor, an inverted U-shaped member straddling thecenter of the frame and having its arms rigidly secured to the 'framesides, a nut borne by said member and arranged in the space between theframe sides, a screw threaded through the nut and having a reduced,upper terminal to receive a central hole in the spring, a pair ofholders borne'by the frame and including U-shaped members seating on topof the frame and the arms of which have spaced 'alined perforations, acurved spring support having eyes at its ends, a pin for reception inthe end eyes ofthe support extending through the perforations, the basesof the holder members havin guidesreceived in the space between the sices of the frame, abutments engaged with the bottom of the frame andhaving guides engaged in the space between the frame sides, and screwsextending through the abutments and threaded into the bases of theholder members to' clamp the latter adjustably to the frame.

2. In a spring bending machine, a frame composed of a strip bent to havespaced sides and connected ends, a member seated on the frame and havinga threaded opening, a screw extending through the opening and betweenthe frame sides, spring engaging means, U-shaped holders on the top ofthe frame for the ends of said means, abutments beneath the holdersengaged with the bottom of the frame, and screws extending between theframe sides and through the abutments and into the holders to clamp thelatter onto the frame;

3. In a spring bending machine, a frame composed of a metal strip set onedge and bent into loop form with spaced sides and connected ends,supports for the strip, a

spring form, a member at the center of the frame bridging the spacebetween the sides thereof, a screw engaging the form and threadedthrough the member and arranged in the space between the frame sides,holders seated on the top edges of the frame sides, abutments engagedwith the bottom edges of the frame sides, the holders and abutmentshaving part-s engaging the frame sides to prevent lateral movementthereof, means to secure the form ends to the respective holders, andscrews extending through the space between the frame sides and connectedto the abutments and holders to clamp the latter to the frame.

In testimony whereof we have hereunto set our hands in presence of twosubscribing witnesses.

ALLEN J. FELLER. JOHN O. VVATTERS. Witnesses R. PEALE HERRIOK, SAMUEL H.BOTTOM.

